Electric lamp



Sept.y 23, 1924. LSQQZM J. B. KAUSAL ELECTRTC LAMP Filed June 28, 3922 2 Sheets-Sheet 1 MM 1 Jgg/Offausa! I JMS ZUf/fff/ Sept. 23, 1924.' 1,509,21

` l J. B. KAUSAL ELECTRIC LAMP Filed1 June 28 l 1922 2 Sheets-Sheet 2 atented Sept. 2.3, 1924..

srarss JOSEPH IB.l KA'USAL, OF CHICAGO', ILLINOIS.

ELECTRIC LAMP.

Application led June 28, 1922. Serial No. 571,459.

and State of Illinois, have invented certain' new and useful Improvements in Electric Lamps, of which the following is a speciiication. i

This invention relates to electric lamps, and more particularly to lamps of the type employed to illuminate the aisles of theatres, particularly the so-called motion picture theatres, and has for its object the pro-4 vision of a lamp of this character adapted to produce a soft diffusion of light, the v source of light being invisible or concealed when viewed at any angle except directly.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed. The invention will be -best understood by reference to the accompanying drawings forming a part of this. specification, and in which,

Fig. 1, is a side elevation of a chair showing the invention in operative posltion thereon,

Fig. 2, is a front elevation of the invention, j

Fig. 3, is a plan View of the invention, showing same in open position to expose the interior construction thereof,

Fig. 4, is a sectional view on the line 4 4 of Fig. 2, and

Fig. 5, is an enlarged sectional detail view on line 5 5, Fig. 4,

The invention is particularly designed for use in the so-called motion picture theatres to illuminate the aisles thereof, and is intended to be secured to a theatre chair adjacent the aisle in such manner that same is situatedupon, or below the normal line of vision of persons in the audience. The lamp in such position produces a soft glow sufficient for illuminating the aisles, while at the saine time the source oflight is con- "cealed except when viewed from a point directly beneath same. The lamp, of course, may be used in any other desirable situation, wherein a device of this nature may prove useful.. i

As illustrated in the drawings, the in-.

vention comprises a lamp 10, which may be secured to a theatre chair. 1 1, in such manner that same is notabove the normal line of vision of a person viewing same. The lamp per se comprises a casing which may be made up of any suitable material, preferably aluminum or white metal, and, as shown, consists of ay base 12, adapted to be secured in the desired position by any suitable means. The base 12 is provided with a suitable bracket 13, which may support an ordinary electric socket 14, connected to a source lof current (not shown) by wires 15 extending through an opening 16 in the base 12. The socketv14 is adapted to accommodate asuitable electric bulb 17 in the ordinary manner. j

Mounted upon the base 12 by means of suitable hinges 18 and 19 is a cover 20, l The cover 20 is adapted to fit upon the base 12, as shown, and may be removably held in position thereon by means of a screw 21 en gaging a threaded socket in 'a stud 22- mounted in the base member 12, or by any other suitable fastening means.

The cover 2O is provided with an opening 23 on its under side, which opening may be of any suitable shape, but, in the present instance, is shown as rectangular. Preferably disposed edgewise and parallel with each other across the opening 23 is a. plurality of bars or slats 24. The slats 24 preferably have their ends adjacent the outer side of the opening 23 disposed within the cover 20, as shown at 25, and extend 0bliquely across said opening so that the opposite ends of the slats adjacent the inner side of the opening 23 are disposed without the cover, as shown at 26, Fig. 4, the slats be-A ing notched asshown at 27 so as to rest upon the edges of the opening and being secured in position by any suitable means. As shown in Fig. '4, the ends 26 of the slats 24 are broader than the ends 25, and, consequently, project outwardly from the opening a greater distance than the ends 25 project inwardly frorn the opening. The slats 24 iny cross section preferably taper in opposite directions, as shown in Fig. '5, Ypreferably from a line drawn from a point adjacent the end 25 to a point midway of the breadth of the outer ends 2 6 of the slats. The adjacent broad sides of the slats are preferably blackened, as shown at 28 in Fig".A 4, by the application of any suitable substance. It will be noticed that the hinge 19 may be formed by extending one of the slats claim as new and 24. between the ears provided on the base member 12.l

The advantages ofthe described construcy'tion are such that light rays freely issue between the slats 24, the cross sectional taper of such slats overcoming the tendency thereof to cast shadows, and the inclination vof disposition of the slats in the opening being such as to conceal the source of light when viewed in all directions except from a point directly beneath the same, thereby producing a soft, unbroken diffusion of light in the desired location. l

. While-I h'ave illustrated and described i the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set fortli,but

' projecting beyond. said opening at one side a source of light Aand having an opening' therein; and. a plurallty of members ar- Aranged edgewise 1n said opening and exthereof and gradually tapering inwardly to the opposite side of said opening, saidmembers in cross section being bevelle'dl in opposite directions.

2. A lamp comprising a casing containing tending from the inner 4side through said l opening and beyond the same, said members having their side faces beveiled toward the ends outward of saidopening.

3. A lamp comprisingA a casing containing. a source of light and having an opening therein; a plurality .of members arranged across said opening, said members at one side of the opening being disposed within the casing and extending outside of said casing to the opposite side of said opening, permitting the issuance of light therebetween but concealing the source of light when viewed from all angles except directly, said members in cross section beingvoutwardly beveled.

4. A lamp comprising a casing consisting of a base member and a cover member hingedly connected together, said casing being adapted to be disposed beneath the level of the line of vision; a source of light in said casing; an opening in said cover; and slats with outwardlyy beveled side faces disposed across said opening permitting the, passage of light therethrough but concealing the source of light -when viewedfrom all angles except directly. y

'5. A lamp comprising a casing having a base'member and a cover hingedly connected together; a socket mounted in said base member adapted to accommodate an electric bulb; an opening in said cover; and a plurality of members arranged edgewise in said opening and extending from the inner side of said opening to the outside thereof, said members in cross section being oppositely bevelled.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH B. KAUSAL.

Witnesses:

JOSHUA R. H. l'ofi'rfs,- .MARGARETYAUER 

